Automatic starting device for internal-combustion engines



July 31 19280 P. VIET AUTOMATIC STARTING DEVICE FOR INTERNAL COMBUSTION ENGINES {5 Sheets-Sheet 1 F. Viei //vveNTOR By. M

Filed march 23, 19 26 July 31, 1928. 1,678,753

P. VIET AUTOMATIC STARTING DEVICE FOR INTERNAL COMBUSTIdN ENGINES Filed March 23; 1926 3 Sheets-Sheet Jul 31, 1928,

P. VlET AUTOMATIC STARTING DEVICE FOR INTERNAL COMBUSTION ENGINE 5 Filed March 23, 1926 3 Sheets-Sheet 3 Patented July 31, 1928.

warren er PAUL VIET, 0F BILLANCO'URT, FRANCE.

AUTQMATEG STARTING DEVICE FOR INTERNAL-COMBUSTION ENGINES.

Application filed March 23, 1926, Serial No- 96,795,'and in France April 4, 1925.

My invention relates to an automatic starting device for internal combustion engines, which are operated by the explosion of a mixture of air which is carburetted by means of acetylene or other explosive gas, or by petrol or like liquid fuel, by the use of suitable carburetting apparatus.

Tngny said invention are comprised the several parts for the compression and the supply of the carburetted air to the cylinders of the engine to be started, and chiefly in the case in which the starter is supplied by a carburettor i. e. in which liquid fuel is employed. In addition to the carburetters ll employ horizontal sprayers whereof various forms of construction are hereinafter described. The compressed air to be carburetted is supplied by a suitable hand pump or by a motor-compressor apparatus.

The appended drawings show various embodiments of the invention.

Fig. 1 is a transverse section of a device in which the single-acting pump is driven by an internal combustion engine Fig. 2 shows two cross sections of a motor starting device employing a hand crank which latter may also actuate the magneto.

Fig. 3 is a View analogous to Fig. 1, but the pump supplies air at two diiierent pressures, the two pistons being mounted on a common piston rod.

Fig. i is a sectional view of a modification of the double-pressure pump, with the two pistons operating in separate cylinders having the adjacent position, and Fig. 6 shows a like modification, with the cylinders in the opposite position and employing a common crank.

Figs. 6, 7, 8 and 9 are various sections of single or double sprayers mounted upon the feeding device which is placed adjacent the motor.

Fig. 10 shows an arrangement in which the sprayer is disposed upon the motor-compressor, and Fig. 11 is a like arrangement in which the sprayer is mounted on the feeding device placed adjacent the motor.

Referring to Figures 10 and 11, the apparatus in general comprises the following parts.

1. A pump or a motor-compressor A.

2. A cock or a hand-operated valve B for starting purposes.

3. A sprayer C.

4. A feeding device D distributing the carburetted air to the different cylinders of the engine to be started.

These various parts are combined according to the several methods of use, i. e.

a The motor-compressor is combined so as to be within the drivers reach.

6. The sprayer and the feeding device are mounted on the engine to be started in order to obviate leakage of petrol and consequent risk of fire.

The motor-compressor apparatus consists essentially of a small auxiliary motor 1 driving a compressor 2 Which is either of the single type as shown in Fig. 1, or of the double type (with a high-pressure part 3 and a low-pressure part 4:) or in tandem (Fig. 3) or side by side (Fig. 4:), or in line, as shown in Fig. 5; the apparatus delivers com-. pressed air directly into the sprayer 5 through cock or a hand-0perated valve.

The said auxiliary motor comprises a device by which it may be started by the handle 6 whilst the same handle can then be used independently to start the main engine by actuating the magneto of the auxiliary motor. This device may be of any suitable kind, provided it will allow these two separate movements, but without interfering with the magneto setting of the magneto of the auxiliary motor. it may for instance be so disposed (Fig. 2) that by turning the handle to the right, it will actuate the magneto and the auxiliary motor, and by turning it to the left it will actuate only the magneto, and herein the pinion 8 mounted on the crankshaft of the auxiliary motor will be automatically disengaged from its spring key 9 by the inclined surface of its slot.

When the said handle is again to be turned to the right, the key 9 will again be engaged in its slot, so that the motor will be turned without interfering with the setting of the magneto relatively to the motor. Tt should be noted that the compressor may be provided with cooling wings, or it may be surrounded by a tight jacket forming an air chamber, as shown in the drawing, ernploying a safety valve 11 to limit the air compression.

in the following descriptions of the spraying apparatus. T will divide those into two classes according to the use of a sprayer till til)

with single pressure or double pressure, and.

each class may comprise three divisions which differ in the method of supplying the liquid fuel chamber.

l. Fluidtight chamber with automatic means preventing all return of pressure into the supply tank.

Supply by pump.

3. Supply by a pressure tank.

Referring to Fig. l, the air which is compressed at a single pressure in the chamber it) is deliveree-with toe cool: openeither (i) into the float chamber 12 in which pressure on the surface of the liquid causes it to rise into the single sprayer 13, or (2) into the annular space it surrounding the said sprayer and thus spraying the liquid fuel by the velocity of its motion and ell stirring up the mixture before it is del Jered into the valve gear.

in this arrangement, the fuel chamber is supplied by the fuel inlet conduit 15 leading from a pump or a pressure tank, and an overflow conduit 16 discharges the fuel into a chamber (at lower pressure) for fuel feeding. Herein, for the sake of clearness, a special cool; 17 controls the fuelfeed, but in practice the feed can be controlled by the starting cock 5, by so disposing the or1fices that when the compressed air conduits are opened, the fuel inlets and outlets of the fuel chamber will be closed, and vice versa.

As shown in the present arrangement, the fuel chamber is supplied by a float chamber.

l/V hen the apparatus is in the inoperative position, the needle 22 of Fig. 3, by its own weight, will be disengaged from its seating and will thus open the orifice of the fuel inlet conduit 23. A ball or a valve 24:, mounted in the said conduit, is so calibrated that it will be readily lifted by the fuel en- 'tering the said conduit, so that the feeding will be normal.

As the level of the fuel rises,'the float 25 ascends and thus brings the needle upon its seating, thus cutting oil all connection with the fuel supply tank. When the device is in operation, the fuel will descend in the chamber 19, so that needle will drop from its seating, and the compressed air can enter the conduit, in which it will meet with the said ball or valve which it will press tightly upon its seating so that all passage towards the conduit will be out ch.

lln Figs. 6 and 8, the compressed air proceeding from the said cock or hand-operated valve will be sent into the sprayer, which in this case is mounted on the feeding device 26 disposed upon the engine to be started.

lit should be noted that Figs. 6 and 7 comprise a single sprayer; the fuel chamber may be supplied from the float chamber shown in Fig. 6 or by the pump or the pressure tank shown in Fig. 7, as above set forth.

Figs. 8 and 9 comprise a double sprayer employing a sure of the air from the motor-compressor, the fuel chamber may also be supplied from the float chamber shown in Fig. or by the pump or the pressure tanlr l i as above stated. The functioning two types of sprayer has been already de scribed with reference to the operation of the devices shown in Figs. 1 and 3.

3 relates to operation by special pump Ag air two and l; the low pressure 4:

or by motor-compressor supply pressures in 3 serves to draw forward the carburetted mizrture formed adjacent the sprayers 18; the high pressure 3 acts both upon the fuel 19 and also in the annular space 29 hetweenthe two sprayers.

' The operation is as follows: v

The high pressure air is through the said conduit, and it acts t b fuel 19, causing it to rise in sprayer 2i, this pressure also acting between the spray ers. When issuing from the sprayer, it acquires a great velocity due to the small size e of the discharge orifice, and it effects the spraying of the liquid discharged from the sprayer 21. The fuel thus formed is rapidly drawn forward by the low pres sure air, and it passes through the restricted conduit 18 into the feeding device by means of the conduit.

Glaims 1. An automatic starting device for intera fuel nal combustion engines comprising, feedmg device connecting with the engine,

an air supply, an air compressor conneo tion with the air supply, a conduit establishing communication between said compressor and the fuel feeding device, a fuel supply, a fuel sprayer connected with said fuel supply interposed in the conduit and responsive to the air of the compressor, an auxiliary motor for driving said compressor, a magneto associated with said compressor, and starting means associated with said magneto and the crank shaft of said auxiliary motor adapted upon movement in one direction to actuate both the magneto and the auxiliary motor and upon movement in the other direction to actuate only the magneto;

2. An automatic starting device for inter nal combustion engines comprising, a fuel spraying device connected to said engine, an air compressor for supplying air to said spraying device, an auxiliary motor for driving said compressor, a magneto for supplying the ignition current to said auxiliary motor and said internal combustion engine on starting, a clutch on the'cranlr shaft of said auxiliary motor, a' hand-operated starting device'associated with said clutch and said magneto whereby upon rotation of said hand operated starting device in one direction the auxiliary motor is started, and upon rotation of said starting device in the oppothe horrid till llEi

site directionthe magneto alone is actuated, to supply starting ignition current for the internal combustion engine.

3. An automatic starting device for inter: nal combustion engines comprising, a fuel feeding device connecting with the engine,

- an air supply; an air compressor in connection with the air suppl a conduit establishing communication etween said compressor and the fuel feeding device, a fuel supply; a fuel sprayer connected with said fuel supply interposed in the conduit and responsive to the air of the compressor, an auxiliarymot'or for driving said compressor,

a magneto for supplying the ignition current to said auxiliary motor and said internal combustion engine on starting," a pinion mounted on the crank shaft of the auxiliary motor, a spring key in said shaft having an inclined surface projecting therefrom and in engagement with said pinion, and a hand operated starting device geared to said pinion and said magneto whereby'upon rotation of said hand operated device in one direction the magneto and auxiliary motor is actuated and upon movement of the hand operated device in the other direction only thefmagneto is actuated.

- In testimony whereof I aflix my signature.

' I PAUL VIET. 

